Gas regulator



April 14, 1931. F. GAUNT ET AL 1,800,995

GAS REGULATOR Filed NOV. 22, 1925 www LL In VENTORS Floyd Gaun, MyronReyno/ds Byand Fal/vh C. Hug/76,5,

ATTORNEY 5 Patented Apr. 14, 1931 UNITED STATES PATENT OFFICE FLO GAUNT,IYRON B. REYNOLDS, AND BALH C. HUGHES, F AN DEBSON, INDIANA,

GNORS TO 'REYNOLDS GAS REGULATOR OO., OF ANDERSON, INDIANA., A

ronarroN or INDIANA COR- eas nneunuron Application llled November 22,192B. Serial No. 150,078.

Our invention relates to improvements in pressure regulators andparticularly to that type of regulator for maintaining a uniformpressure in gas service pipes irrespective of ,f1 the iuctuation ofpressure in the supply mains.

It is one of the objects of our invention to provide a regulator of theabove type which shall be so constructed as to permit a ready renewal ofWorn parts and-ready access to the parts without dlsassociating theentire structure.

For the urpose of disclosin our invention we have il ustrated one emboiment thereof in the accompanying drawings in which Fig. 1 is a verticalsectional view of a regulator embodying our invention, and F Fig. 2 is asectional view ori the line 2-2 of lgn the embodiment of the inventionillustrated we provide a valve casing 1 having an inlet connection 2 andan outlet connection 3 which are in communication with each otherthrough a port f1 having a valve seat 5. This port is formed 'throughthe transverse web 6 in the valve casing and the seat 5 is formed on athimble 7 threaded into this web 6 and having an annular flange 8seating against the bottom face of the web. The valve casing on theoutlet side of the valve is provided with a assage or port 9 extendingupwardly and into the bottom portion of the diaphragm case 10. This caseis provided with a top closure member 11 and between the top closuremember 11 and the case 10 a diaphragm 12 is clamped.

The diaphragm 12 is adapted to operate a valve co-operating with thevalve seat and comprising a valve block 13 recessed on its upper face toreceive a facing 14 which may be of leather or other suitable material.This valve block is provided with an internally threaded socket 15adapted to receive the threaded end 16 of a stem 17, the stem' above thethreaded portion being enlarged to an annular iiange 18 between whichand the valve block the facing 14 is clamped. The valve block, on itsbottom, is slotted as at 19 to permit the turning thereof by al screwdriver 5 or other operating device inserted through an opening in thebottom of the casing 1 which opening. is normally closed by a plug 20.The stem 17 is provided with a squared guiding ortion 21 operating in acircular o ening 22 ormed 1n a guiding web 23 extending transversely ofthe casing from the two side walls thereof and preferably formedintegrally with these walls. The upper end of the stem 17 is screwthreaded as at `211 to take into the lower end of a threaded socket 25in a clamping and guiding member 26. This clamping and guiding member atits bottom has clamped between it and a washer 27 on the stem 17, adiaphragm 28 and at its upper end clamps between it and a weighted plate29, the diaphragm 12, a screw 30 passing through the plate 29 and intothe upper end of the socket 25 secures the two clamping members 29 and26 together. To prevent rotation of the clamping member 26, and aresulting twisting strain on the diaphragms, when the valve block 13 isremoved, we provide guiding ears 31 on each side of the stem portion ofthe clamping member 26, which ears operate in slots in the bottom wallof the casing 10, therebypreventing rotation of the clamping member 26and at the same time permitting a free vertical movement thereof.

The valve is lowered toward open position by the weight of the plate 29and the clamping member which, however, may be supplemented by a coiledspring 32 interposed between the top of the plate 29 and an adjustableplug 33, which plug is provided with a vent port 34 to prevent thetrapping of air in the chamber above the diaphragm.

In operation, the gas passes into the casing 1 through the connection 2and out through the valve 4 and the connection 3. As long as the gasflows normally the valve will remain open under its 'bias towards openposition. If, however, for any reason the pressure on the delivery sideshould build up, a back pressure will be created which, passing throughthe opening 9 intoA the chamber beneath the diaphragm, will tend toraise the diaphragm and move the valve toward closed position, therebyshutting down or off the flow of gas through the valve until thepressureon the supply side has dropped, which droppin pres' sure willpermit the escape of ressure from the diaphragm chamber there y againpermitting the valve to be moved towards open position.

By the construction of the removable valve block 13 with its renewableface 14 we are enabled, by the simple expedient of removing the block20, to remove the block 13 and renew the face whenever thisA facebecomes so worn as to not operate satisfactorily. Furthermore,A -by theprovision of the guide formed b the web 23 and the guiding portion 21ofiithe stem a movement of the valve in a straight line is insured sothat it will always seat in exactly the same point thereby preventingthe fac^ of the valve from becoming roughened. The valve, as a matter offact, is guided'at two points, namely, at the point where the stemportion of the clampin member 26 passes through the casing 10 and at theweb 23. By the squaring of the portion 21 and passing the same through acircular opening an absolute uide for the stem is provided at this pointwlth a minimum of friction.

We claim as our invention:

A pressure regulator comprising a casing, a diaphragm mounted in saidcasing, a pair of clamping plates mounted one on each side of saiddiaphragm, the lower plate having a guiding extension thereon andoperating in an opening in the casing, a valve casing connected to saidregulator casing, a diaphragm clamped between said valve and regulatorcasing, a valve stem threaded into said guiding extension and havingclamping means between which and the guiding extension the secondmentioned diaphragm is clamped, the bottom end of said stem b'eing screwthreaded, a downwardly opening valve threaded on said end and having arenewable face, and a relatively thick transverse web in said valvecasing approximately midway between the second mentioned diaphragm andthe valve when the valve is in closed position and having a roundopening therein through which said valve stem passes, that portion ofthe stem passing through said opening being rectangular in crosssection, the valve casing having an opening in alignment with the ,lowerend of the valve stem and of a diameter greater than the downwardlyopening valve, and a removable plug arranged in said opening in saidvalve casing having inlet and outlet openings so arranged that pipingconnected thereto will not interfere with the ready removal of saidplug.

In witness whereof, we have hereunto set our hands at Anderson, Indiana,this 18th day of November, A. D. one thousand nine hundred and twentysix.

FLOYD GAUNT. MYRoN B. REYNOLDS. RALPH o. HUGHES.

